Agda: drop obsolete version 2.3.2.2
beanstalkd: upgrade to v1.10
nixos/stage-1: Don't check resilient filesystems
unifi: Add derivation
python-robotframework: update from 2.8.4 to 2.8.5
nixos/unifi: Add service module
unifi: Add wkennington as a maintainer
nixos/unifi: Fix ordering of mount rules
nixos/unifi: Explain and simplify the bind mount configuration
riemann-c-client: Update from 1.1.1 to 1.2.0
syslog-ng-incubator: Update from 0.3.1 to 0.3.3
syslog-ng: Update from 3.5.4.1 to 3.5.6
Merge pull request #3418 from peti/drop-obsolete-agda-version

Agda: drop obsolete version 2.3.2.2
Add the Pharo language and IDE package

http://pharo.org

I'm one of the developers of Pharo and the creator and maintainer of the
Ubuntu PPA : https://launchpad.net/~pharo/+archive/stable.
chrony: Update from 1.29.1 to 1.30
systemd: Use the default log target ("journal-or-kmsg")

This ensures that early systemd messages end up in the journal (via
the kmsg buffer).
test-instrumentation.nix: Improve logging

In particular, don't clobber the serial console with duplicate output
from systemd and the journal, and increase the log level.
test-instrumentation.nix: Set an empty root password

This makes it easier to log in during interactive sessions.
Add missing runtime dependency for stevedore
Fix evaluation in virtualbox-image.nix